65664407161333 has 4 divisors (see below), whose sum is σ = 65784451781920. Its totient is φ = 65544362540748.

The previous prime is 65664407161237. The next prime is 65664407161343. The reversal of 65664407161333 is 33316170446656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65664407161333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65664407161343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60022309473 + ... + 60022310566.

It is an arithmetic number, because the mean of its divisors is an integer number (16446112945480).

Almost surely, 2^{65664407161333} is an apocalyptic number.

It is an amenable number.

65664407161333 is a deficient number, since it is larger than the sum of its proper divisors (120044620587).

65664407161333 is a wasteful number, since it uses less digits than its factorization.

65664407161333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120044620586.

The product of its (nonzero) digits is 19595520, while the sum is 55.

The spelling of 65664407161333 in words is "sixty-five trillion, six hundred sixty-four billion, four hundred seven million, one hundred sixty-one thousand, three hundred thirty-three".